The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2008
Filed:
Dec. 03, 2003
Jürg Haase, Bettingen, CH;
Thomas Ehlis, Freiburg, DE;
Elek Borsos, Birsfelden, CH;
Stefan Müller, Weil am Rhein, DE;
Jürg Haase, Bettingen, CH;
Thomas Ehlis, Freiburg, DE;
Elek Borsos, Birsfelden, CH;
Stefan Müller, Weil am Rhein, DE;
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
Described are amino substituted hydroxyphenyl benzophenone derivatives of formula (I), wherein R, and Rindependently from each other are; C-Calkyl; C-C-alkenyl; C-Ccycloalkyl; C-Ccycloalkenyl; or R, and Rtogether with the linking nitrogen atom form a 5- or 6-membered heterocyclic ring; nis a number from 1 to 4; when n=1, Ris a saturated or unsaturated heterocyclic radical; hydroxy-C-Calkyl; cyclohexyl optionally substituted with one or more C-Calkyl; phenyl optionally substituted with a heterocyclic radical, aminocarbonyl or C-Calkylcarboxy; when nis 2, Ris an alkylene-, cycloalkylene- or alkenylene radical which is optionally substituted by a carbonyl- or carboxy group; o Rtogether with A forms a bivalent radical of the formula (Ia), wherein nis a number from 1 to 3; when nis 3, Ris an alkanetriyl radical; when nis 4, Ris an alkanetetrayl radical; A is —O—; or —N(R)—; and Ris hydrogen; C-Calkyl; or hydroxy-C-Calkyl. The compounds are useful as UV filters in sunscreen applications.